Improvement in railway-car brakes



A. HIGLEY.

Car Brake.

Patented April 12, 1870.

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limited tate AARON IIIGLEY, OF OLVELAND, OHIO.

Lette/rs Pct-tent No. 101,87 4, dated April 12, 1870.

IMPROVEMENT IN RAILWAY-CAR BRAKES'.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern:

upon the axles of the wheels, as hereinaiter more fully described.

Drawings. Figure 1 is a top view of a car truck and brake. Fignre'2 aside view. Figure 3, an end view.

Figure 4, a transverse section. Figure 5, a detached section.

Like letters of reference refer to like parts in the dilferent views.`

Description.

In g.

A represents the wheels of the truck, secured in a rigid manner to theaxles B, and of' which O are the bearings or journals.

D'is a conical shell, whichv is also connected to the axle in a rigid,permanent manner, and revolves con# jointly therewith.

In said shell is tted a wooden core, E, iig. 4, the base of which issecured to a deep-flanged disk, F, in which it is iitted, and-attachedthereby to the axle in a free manner, so that, as the axle and shellrevolve, the core remains stationary, but susceptible of a lateralmovement.

A shell -and core as thus construetedare placed upon each axle, and thecores are connected to each other by the brace G', the bifurcated endsof which are attached to the disks of the cores, thereby holding themfrom revolving with their axles in a secure and rigid manner.

The bifurcated ends of the brace G are attached to the axles by meansofa yoke, H, in which the axle turns.

Y Said yoke is prevented from slidingr laterally upon the axles by meansof a pair of collars, I I', secured rigidly to the axle, and betweenwhich the yoke is placed, as shown in figs. 1 and 3.

To each side of the yoke, above and below the axle, is pivoted one endof a short link, J, while the opposite end ispivoted to a bail, K; alsoa similar pair of links, L, is pivoted to the disk F of the core, and tothe bail in like manner.

The core and yoke on each axle are alike provided with an arrangement oflinks and bail, whereby they are operated by means of the lever M, fig.1, connected 'therewith by means of the rods N.

By the arrangement of the yokes H H and collars I I', the lateral thrustof the core E and the connecting-links is arrested in connecting anddisconnecting the brakes.

As the yoke has no lateral movement between the collars I I', it followsthat the core will have a positive lateral movement by the action et'the links J L and balls K, inforcing the core into and out of contact'with the shell I), and holding it in proper position when the brake iseither on or oli".

Having thus described the construction and arrangement of the brake, thepractical operation of the samel is as follows: y

It will be obvious that, on turning the lever M in the direction of thedottedlines a, tig. 1, the several links J L will be drawn by the rods Nto an approximate line with the axles.

Now, inasmuch as the yokes H cannot be moved laterally, in consequenceof being placed between the rigid collars I I', the disk and core, beingfree on the axle, wili therefore be moved laterally, and the corethereby driven into the shell with a degree of force proportionate tothe power applied to the lever.

The shell being thus closed upon thecore, the friction thereby inducedwill stopv the revolution of the wheels and bring the car to a standstill. v

The power applied to the .lever being relaxed, the lever will return tothe position shown by means of the reaction of a spring, c, lig. 5,placed immediately under the lever, around the axis or vibration,thereby relieving the core from its contact with and pressure upon theshell. The car will now be free to move forward.

In consequence of the large amount of rubbing surface presented bythecore and` shell upon each other, a comparativelyslight eli'ort isrequired to bring them into Contact with suicient'force to stop thecars, and this being applied by the joint action ofthe lever and thepivoted links, an immediate stop of the car can be made with but littleeffort on the part of the brakeman.

It will be observed that the brace G', connecting the front and hindcore and axles to each other, consists of two rods crossing each other,as shown in d 5.

g'lliis form of connection serves as 'a brace, whereby greater strengthis obtained, in order` to prevent the Core from revolving; then, by theemployment of e The shell D, eore E, and braces G G', in combinabrace,constructed as G, in fig. 2, instead of n Core tion with the links J L,bail K, yoke H, and collars and shell constructed as above described, epair of I I, when constructed und arranged substantially as plein disksmay be used; and though, perhaps, less eiliand for the purpose setforth.

cient than the core, it can be applied with goed re- AARON HGLEY. sultswithout departing from the principle of my in-l vention. Witnesses 'WhatI claim as my improvement, nud desire to se- J. H. BURRIDGE,

cure by Letters Patent, is- 1D. L. HUMrimmY.

